Decoration lamp



FIG. 1 is a front view of a decoration lamp showing my present design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a decoration lamp, as shown and described. 